I did a little research (simple internet search).
Per the ADA, which isn't applicable to HOAs, the
minimum is 1 handicap space per 25. Of the handicap spaces, 1 needs to be van asses sable for every 6. Example: 1-6 handicap spaces = 1 van accessible handicap, 7-12 handicap spaces = 2 van accessible handicap spaces. Van accessible spaces are those handicap spaces with a no parking access next to them (lined in blue).
See:
Accessible Parking from the ada site.
However, HOAs/COAs are covered under the fair housing act. Therefore, if a request for handicap parking is made, the Association should create one under reasonable accommodation. See:
Handicap Parking: What Your Homeowners Association Must Know from HOALeader (2010 article)
Additionally, local ordinances may require a certain number of handicap parking on private property.
You will need to contact your local authority to find out.